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. 2018 Mar 8;9(3):118. doi: 10.3390/mi9030118

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Animated Earth globe test template. (a) Original Earth globe image; and (b) sequentially-rotating images (2°/frame) of the Earth template (semi-transparent surface, 207 × 207 pixels).